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humps and bumps, wink and twinkle

A children's article talking about why do stars twinkle as follow.

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Because of blankets of air. Earth is surrounded by its atmosphere - piles of thin layers or blankets of air. Starlight has to come through the atmosphere for us to see it. It travels in beams from so far away that the beams are weak by the time they get there. They run into humps and bumps in the atmosphere. The light beams move back and forth a little - and the stars seem to wink and twinkle.
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Re: humps and bumps, wink and twinkle

1 The atmorsphere is not constant and smooth- the ligh goes up and down, not in a perfectly straight line
2 If you wink, you shut one eye, so I assume that means the star can appear to disappear then reappear.

Re: humps and bumps, wink and twinkle

May I make a sentence with "humps and bumps"? Any mistake in the sentence?

There are a lot of people awaiting the arrival of Jackie Chan at the hall entrance. Once the entrance door has opened, everybody goes humps and bumps into the hall to catch the seat closest to the stage.